1 g/watt theory

T

Tannerwilliams919

Active Member
Is this per light or per plant? For example, I have a 300L HGL RSPEC that is 270 watts. I want to grow 4 plants in a 3x3x6. Should I expect 270g total? Or 270g per plant?

I'm a new grower. Don't beat me up too badly. I know a lot of things have to go right to get the 1g/watt number.
 
Most places will tell you it’s .5g dry per watt total at wall for a first time grower, 1g and up after you get your feet wet. So 135 grams dry is .5 total, regardless plant count. There’s potential for more and some LED manufacturers advertise over 2g a watt. I don’t run LED.
 
Expect nothing. The 1g per watt theory is a test of the efficiency of your grow. A gram of bud per watt of electricity pulled from the wall is considered efficient. That doesn’t mean you will yield as many grams as you have watts. It only means you have filled the entirety of the available grow space with plant material. Not as easy as it sounds.
 
Richard Drysift said:
Expect nothing. The 1g per watt theory is a test of the efficiency of your grow. A gram of bud per watt of electricity pulled from the wall is considered efficient. That doesn’t mean you will yield as many grams as you have watts. It only means you have filled the entirety of the available grow space with plant material. Not as easy as it sounds.
Click to expand...
True story, expect nothing and you will never be disappointed.
 
Richard Drysift said:
Expect nothing. The 1g per watt theory is a test of the efficiency of your grow. A gram of bud per watt of electricity pulled from the wall is considered efficient. That doesn’t mean you will yield as many grams as you have watts. It only means you have filled the entirety of the available grow space with plant material. Not as easy as it sounds.
Click to expand...

Thanks. In that case, am I better off just growing 2 instead of 4?
 
Wattzzup said:
Focus on making it to a successful harvest. Don’t worry about fancy methods or anything.

Grow 2 and LST. Simply pull branches where you want them to grow and tie them down. Simple simple. Watch it grow.
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Yep. That's what I'm going for! Trying to find a good video on how to tie down. Do I tie down the main stem and all the side stems as well?
 
Wattzzup said:
Focus on making it to a successful harvest. Don’t worry about fancy methods or anything.

Grow 2 and LST. Simply pull branches where you want them to grow and tie them down. Simple simple. Watch it grow.
Click to expand...

Seconded. Just focus on growing healthy plants, and getting your own schedule and discipline dialed in. The simpler you keep things at first, the better chance of a good harvest quality wise.

Don't worry about weight or yield. That all varies based on strain anyway. For me at least I have to grow a strain at least 2 if not 3 rounds to really see how to best work it to fill space. For now that will just complicate things.

Just enjoy growing a couple plants and get through harvest, drying, and curing. I would even say skip LST. I think it's good experience to grow a plant or 2 all natural just so you can experience how a non trained plant behaves. This will then influence you the next round when you are ready to bend it to your will. If you are limited by height this might not work, but still good to do if you can just to add to your experience.
 
Gemtree said:
I would do 9 and go for an oz each for that gram per watt but that's me
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But why couldn't I do 2 plants and get 135g off of each? (again, in theory, assuming everything went perfectly and I somehow got to 1g/watt) Is there a max out on wattage per square foot a plant can handle?
 
Tannerwilliams919 said:
But why couldn't I do 2 plants and get 135g off of each? (again, in theory, assuming everything went perfectly and I somehow got to 1g/watt) Is there a max out on wattage per square foot a plant can handle?
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You can if you want to veg twice as long and get the plant structure perfect. Not sure on max wattage per sq ft of led probably around 50
 
Tannerwilliams919 said:
But why couldn't I do 2 plants and get 135g off of each? (again, in theory, assuming everything went perfectly and I somehow got to 1g/watt) Is there a max out on wattage per square foot a plant can handle?
Click to expand...

Either way is good. What @Gemtree is referring to is closer to a SOG (Sea of Green) vs a SCROG (Screen of Green). If you look up the 2 terms you will understand the pros/cons of each way. I lean towards SOG but since I grow in soil I dont like to use too small of pots. So for example in my 4x5 closet I do 12 plants in 2 gallon pots (3 rows of 4 plants). They veg for @ 3 weeks (after seedling stage) til they are @ 18" tall with little training (sometimes I will top once depending on strain). In a true SOG people will sometimes use small pots and flower them right after the clones are rooted. This results in a 'sea' of giant colas. But depending on legality on plant counts (or your concern about them), is the reason most people will just do a few plants, and SCROG them to get maximum coverage in their space.


Gemtree said:
You can if you want to veg twice as long and get the plant structure perfect. Not sure on max wattage per sq ft of led probably around 50
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Latest LED tech like strips or QBs 30-35 is fine. Over 40 is probably overkill.
 
The problem with the gram/watt theory is that it does not mention TIME. With out time being factored in, it becomes useless.

Eg 1) veg for 3 month and say you got 2000g from ONLY a 600w light.

Eg 2) veg for 2 weeks and only get 500g from a 600w light.
Arbitrary numbers.


We need a Standard amount of time that we all agree on, for this to work. I today here and now suggest 4 weeks as the standard amount of time to veg, to make claims with g/w WHOS WITH ME
 
SnidleyBluntash said:
The problem with the gram/watt theory is that it does not mention TIME. With out time being factored in, it becomes useless.

Eg 1) veg for 3 month and say you got 2000g from ONLY a 600w light.

Eg 2) veg for 2 weeks and only get 500g from a 600w light.
Arbitrary numbers.


We need a Standard amount of time that we all agree on, for this to work. I today here and now suggest 4 weeks as the standard amount of time to veg, to make claims with g/w WHOS WITH ME
Click to expand...

I think we should not standardize on veg time, but your G per Watt needs to be not on the lighting used not just in flower, but like the entire kWh used for your entire grow.

So something like: (4 weeks veg @ 120W x 18 hrs per day) + (8 weeks flower @ 600W x 12 hrs per day) + (wattage used of all environmental controls, AC, DH, fans) etc. I think the new challenge should be who can grow the most with the least input indoors, trying to be as energy efficient and have least possible environmental impact as possible.
 
SnidleyBluntash said:
The problem with the gram/watt theory is that it does not mention TIME. With out time being factored in, it becomes useless.

Eg 1) veg for 3 month and say you got 2000g from ONLY a 600w light.

Eg 2) veg for 2 weeks and only get 500g from a 600w light.
Arbitrary numbers.


We need a Standard amount of time that we all agree on, for this to work. I today here and now suggest 4 weeks as the standard amount of time to veg, to make claims with g/w WHOS WITH ME
Click to expand...
I know 4 weeks is ok but my past grows I’m still closer to 60 on veg including right now, I like big plants, I never got 2000 grams off my 600w 3 month veg grows, shit I wish man, I got 7 foot plants though..
 
SnidleyBluntash said:
The problem with the gram/watt theory is that it does not mention TIME. With out time being factored in, it becomes useless.

Eg 1) veg for 3 month and say you got 2000g from ONLY a 600w light.

Eg 2) veg for 2 weeks and only get 500g from a 600w light.
Arbitrary numbers.


We need a Standard amount of time that we all agree on, for this to work. I today here and now suggest 4 weeks as the standard amount of time to veg, to make claims with g/w WHOS WITH ME
Click to expand...

I think about this all the time when people talk about g/w. That's only half the equation. Hit me with your g/w/hour. Then we can talk!
 
SnidleyBluntash said:
The problem with the gram/watt theory is that it does not mention TIME. With out time being factored in, it becomes useless.

Eg 1) veg for 3 month and say you got 2000g from ONLY a 600w light.

Eg 2) veg for 2 weeks and only get 500g from a 600w light.
Arbitrary numbers.


We need a Standard amount of time that we all agree on, for this to work. I today here and now suggest 4 weeks as the standard amount of time to veg, to make claims with g/w WHOS WITH ME
Click to expand...
Maybe space, square footage could be a proxy for time, like g/watt/sq. ft. Reason is, you could grow one big plant in a long time, but many small plants in a short time. In the end though the space is filled, doesn't matter how you got there. Then again, maybe you are on the right track with something like grams per watt-hour, where efficiency is (pot out / electricity in), which sounds attractive as a raw efficiency number. Is it really as simple as electricity = pot + heat?

Do experienced growers count their popcorn buds in the g/watt total? Been at 0.6 for a while (only counting good bud, maybe a little bit over 1 with the stuff that gets made into edibles), and not getting to that 1g/watt standard feels bad.
 
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